Black Frixion Broad 1mm Rollerball Pen The Frixion Broad 1mm Rollerball pen allows you to simply rub out your mistakes with the eraser stud and watch it disappear! You can write over your mistakes immediately with the same pen, no waiting for anything to dry or having to use a different correction pen. The Frixion pen has a stainless steel tip and carbide ball for precision and reliable usage. Brilliant for crosswords, Sudoku and other games. The 1mm tip draws a 0.5mm line. Not to be used for signatures, legal documents, examination papers or other documents where writing needs to be of a permanent nature.